Class III well, under the federal Underground Injection Control (UIC) program promulgated under Part C of the Safe Drinking Water Act, 42 U.S.C. 300 et seq (2003), a well that injects fluids for extraction of minerals, including solution mining of minerals. The term includes any well used in:

(a) Mining of sulfur by the Frasch process;

(b) In situ leach mining of uranium or other metals.

This category includes only in situ production from ore bodies that have not been conventionally mined. Wells used for solution mining, such as stope leaching, are classified as Class V wells; or

(c) In situ mining of salts, trona, or potash;

Class III UIC wells in South Dakota are regulated by the US Environmental Protection Agency (EPA). For more details on EPA's requirements please contact Douglas Minter at (303) 312-6079 .